PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-02:57:50
G07     51.7           68.8                3.8 +/-    0.61       4.1 +/-    0.61  0.030 / 0.030
G08     50.9           39.0                3.0 +/-    1.19       4.4 +/-    1.19  0.030 / 0.040
G09     176.6          36.9                6.4 +/-    1.38       9.7 +/-    1.38  0.150 / 0.270
G11     118.8          34.4                5.9 +/-    0.80       9.5 +/-    0.80  0.190 / 0.260
G17     198.5          14.8                2.8 +/-    2.88       6.9 +/-    2.88  0.130 / 0.250
G18     102.6          15.4                5.8 +/-    1.11      14.2 +/-    1.11  0.180 / 0.290
G23     161.5          11.9                3.4 +/-    2.83       9.2 +/-    2.83  0.080 / 0.170
G27     38.1           11.4                2.4 +/-    1.44       6.6 +/-    1.44  0.090 / 0.200
G28     270.1          49.8               -4.7 +/-    1.42      -6.0 +/-    1.42  0.040 / 0.040
G30     328.3          57.4                2.4 +/-    0.70       2.8 +/-    0.70  0.040 / 0.040